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Madison, WI 53726-2398
Phone: (608) 231-9200
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Title: Biorefinery lignosulfonates from sulfite-pretreated softwoods as dispersant for graphite

Source: ACS Sustainable Chemistry & Engineering, Vol. 4(4). pp. 2200-2205

Author(s)Qin, Yanlin; Yu, Lixuan; Wu, Ruchun; Yang, Dongjie; Qiu, Xueqing; Zhu, Junyong

Publication Year: 2016  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4709-1B

Abstract: Two biorefinery lignosulfonates (LSs), Ca-LS-DF and Na-LS-LP were, respectively, isolated from pilot-scale sulfite-pretreated spent liquor of lodgepole pine and fermentation residue of Douglas-fir harvest forest residue. The molecular weights of Na-LS-LP and Ca-LS-DF were approximately 9 000 and 11 000 Da, respectively. The two LSs were applied as dispersant for graphite in aqueous suspensions. The dispersion stability was evaluated by a scanning electron microscope and Turbiscan Lab Expert. LS performance in modifying graphite was better than that of a commercial dispersant Reax-85A as indicated by the Turbiscan TSI values, zeta potential of suspension particles, and SEM imaging. The practical importance of this study lies in the fact that the pilot-scale sulfite pretreatments that produced the two LSs also produced excellent bioethanol yields at high titer without detoxification and washing, suggesting the LSs are a true value-added coproduct for high yield biofuel production.

Keywords: Lignosulfonate; Graphite; Dispersion stability; Lignin-coproducts; Biorefinery

Publication Review Process: Formally Refereed

File size: 4,096 kb(s)

Date posted: 12/02/2016

This publication is also viewable on Treesearch:  view
RITS Product ID: 83715
Current FPL Scientist associated with this product
Zhu, JunYong
Research General Engineer

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